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== AC magnetic tracking ==

== AC magnetic tracking ==

AC magnetic tracking means "alternating current magnetic tracking". It uses fluctuating magnetic fields generated by a source and picked up by a sensor. The sensor can be about 2mm thick.

AC magnetic tracking means "alternating current magnetic tracking". It uses an AC electric current to generate alternating magnetic fields, which are picked up by a tracking sensor.

The fastest electromagnetic tracking system in the world is the Polhemus Viper 16, which tracks up to 960hz. This is much faster than the kalman filtered 100hz or 150hz of all existing consumer VR systems like [[SteamVR]]. Magnetic tracking feels better and more natural because it has a higher update rate and preserves high frequency transients in the movement, like a flick of a finger.

The fastest electromagnetic tracking system in the world is the Polhemus Viper 16, which tracks up to 960hz. This is much faster than the kalman filtered 100hz or 150hz of all existing consumer VR systems like [[SteamVR]]. Magnetic tracking feels better and more natural because it has a higher update rate and preserves high frequency transients in the movement, like a flick of a finger.